Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Match everything enclosed
    (?:...)
  • Capture everything enclosed
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

/
/
mg

Test String

Code Generator

Generated Code

#include <StringConstants.au3> ; to declare the Constants of StringRegExp #include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate Local $sRegex = "(?m)(?:[a-z0-9!#$%&'*+\/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+\/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])" Local $sString = "List of Valid Email Addresses" & @CRLF & _ "" & @CRLF & _ "email@example.com" & @CRLF & _ "firstname.lastname@example.com" & @CRLF & _ "email@subdomain.example.com" & @CRLF & _ "firstname+lastname@example.com" & @CRLF & _ "email@123.123.123.123" & @CRLF & _ "email@[123.123.123.123]" & @CRLF & _ ""email"@example.com" & @CRLF & _ "1234567890@example.com" & @CRLF & _ "email@example-one.com" & @CRLF & _ "_______@example.com" & @CRLF & _ "email@example.name" & @CRLF & _ "email@example.museum" & @CRLF & _ "email@example.co.jp" & @CRLF & _ "firstname-lastname@example.com" & @CRLF & _ "" & @CRLF & _ "List of Strange Valid Email Addresses" & @CRLF & _ "" & @CRLF & _ "much.”more\ unusual”@example.com" & @CRLF & _ "very.unusual.”@”.unusual.com@example.com" & @CRLF & _ "very.”(),:;<>[]”.VERY.”very@\\ "very”.unusual@strange.example.com" & @CRLF & _ "" & @CRLF & _ "List of Invalid Email Addresses" & @CRLF & _ "" & @CRLF & _ "plainaddress" & @CRLF & _ "#@%^%#$@#$@#.com" & @CRLF & _ "@example.com" & @CRLF & _ "Joe Smith <email@example.com>" & @CRLF & _ "email.example.com" & @CRLF & _ "email@example@example.com" & @CRLF & _ ".email@example.com" & @CRLF & _ "email.@example.com" & @CRLF & _ "email..email@example.com" & @CRLF & _ "あいうえお@example.com" & @CRLF & _ "email@example.com (Joe Smith)" & @CRLF & _ "email@example" & @CRLF & _ "email@-example.com" & @CRLF & _ "email@example.web" & @CRLF & _ "email@111.222.333.44444" & @CRLF & _ "email@example..com" & @CRLF & _ "Abc..123@example.com" & @CRLF & _ "" & @CRLF & _ "List of Strange Invalid Email Addresses" & @CRLF & _ "" & @CRLF & _ "”(),:;<>[\]@example.com" & @CRLF & _ "just”not”right@example.com" & @CRLF & _ "this\ is"really"not\allowed@example.com" & @CRLF & _ "" Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYGLOBALFULLMATCH) Local $aFullArray[0] For $i = 0 To UBound($aArray) -1 _ArrayConcatenate($aFullArray, $aArray[$i]) Next $aArray = $aFullArray ; Present the entire match result _ArrayDisplay($aArray, "Result")

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm